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Finding the Fourth Proportional to 574.76, 793.68 and 477.56

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Solution

The fourth proportional to 574.76, 793.68 and 477.56 is: 659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.76 : 793.68 = 477.56 : x
  2. Step 2: Convert to fraction form
    574.76/793.68 = 477.56/x
  3. Step 3: Cross multiply
    574.76x = 793.68 × 477.56
  4. Step 4: Simplify right side
    574.76x = 379,029.82
  5. Step 5: Solve for x
    x = 379,029.82/574.76
  6. Step 6: Final answer
    x = 659.46

Related Problems

Find fourth proportional to 287.38, 396.84 and 238.78
Half scale
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Double scale
Find fourth proportional to 575.76, 795.06 and 478.56
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.