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Finding the Fourth Proportional to 598.46, 825.48 and 388.76

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Solution

The fourth proportional to 598.46, 825.48 and 388.76 is: 536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    598.46 : 825.48 = 388.76 : x
  2. Step 2: Convert to fraction form
    598.46/825.48 = 388.76/x
  3. Step 3: Cross multiply
    598.46x = 825.48 × 388.76
  4. Step 4: Simplify right side
    598.46x = 320,914.73
  5. Step 5: Solve for x
    x = 320,914.73/598.46
  6. Step 6: Final answer
    x = 536.23

Related Problems

Find fourth proportional to 299.23, 412.74 and 194.38
Half scale
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Double scale
Find fourth proportional to 599.46, 826.86 and 389.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.