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Finding the Fourth Proportional to 472.43, 652.32 and 354.51

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Solution

The fourth proportional to 472.43, 652.32 and 354.51 is: 489.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.43 : 652.32 = 354.51 : x
  2. Step 2: Convert to fraction form
    472.43/652.32 = 354.51/x
  3. Step 3: Cross multiply
    472.43x = 652.32 × 354.51
  4. Step 4: Simplify right side
    472.43x = 231,253.96
  5. Step 5: Solve for x
    x = 231,253.96/472.43
  6. Step 6: Final answer
    x = 489.50

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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.