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Finding the Fourth Proportional to 583.39, 875.12 and 258.98

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Solution

The fourth proportional to 583.39, 875.12 and 258.98 is: 388.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.39 : 875.12 = 258.98 : x
  2. Step 2: Convert to fraction form
    583.39/875.12 = 258.98/x
  3. Step 3: Cross multiply
    583.39x = 875.12 × 258.98
  4. Step 4: Simplify right side
    583.39x = 226,639.47
  5. Step 5: Solve for x
    x = 226,639.47/583.39
  6. Step 6: Final answer
    x = 388.49

Related Problems

Find fourth proportional to 291.69, 437.56 and 129.49
Half scale
Find fourth proportional to 1,166.78, 1,750.23 and 517.97
Double scale
Find fourth proportional to 584.39, 876.62 and 259.98
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.