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Finding the Fourth Proportional to 472.39, 651.57 and 297.61

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Solution

The fourth proportional to 472.39, 651.57 and 297.61 is: 410.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.39 : 651.57 = 297.61 : x
  2. Step 2: Convert to fraction form
    472.39/651.57 = 297.61/x
  3. Step 3: Cross multiply
    472.39x = 651.57 × 297.61
  4. Step 4: Simplify right side
    472.39x = 193,913.75
  5. Step 5: Solve for x
    x = 193,913.75/472.39
  6. Step 6: Final answer
    x = 410.50

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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.