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Finding the Fourth Proportional to 477.42, 716.20 and 152.70

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Solution

The fourth proportional to 477.42, 716.20 and 152.70 is: 229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.42 : 716.20 = 152.70 : x
  2. Step 2: Convert to fraction form
    477.42/716.20 = 152.70/x
  3. Step 3: Cross multiply
    477.42x = 716.20 × 152.70
  4. Step 4: Simplify right side
    477.42x = 109,363.74
  5. Step 5: Solve for x
    x = 109,363.74/477.42
  6. Step 6: Final answer
    x = 229.07

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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.