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Finding the Fourth Proportional to 521.33, 719.55 and 344.32

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Solution

The fourth proportional to 521.33, 719.55 and 344.32 is: 475.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.33 : 719.55 = 344.32 : x
  2. Step 2: Convert to fraction form
    521.33/719.55 = 344.32/x
  3. Step 3: Cross multiply
    521.33x = 719.55 × 344.32
  4. Step 4: Simplify right side
    521.33x = 247,753.66
  5. Step 5: Solve for x
    x = 247,753.66/521.33
  6. Step 6: Final answer
    x = 475.24

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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.