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Finding the Fourth Proportional to 472.40, 651.96 and 297.76

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Solution

The fourth proportional to 472.40, 651.96 and 297.76 is: 410.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.40 : 651.96 = 297.76 : x
  2. Step 2: Convert to fraction form
    472.40/651.96 = 297.76/x
  3. Step 3: Cross multiply
    472.40x = 651.96 × 297.76
  4. Step 4: Simplify right side
    472.40x = 194,127.61
  5. Step 5: Solve for x
    x = 194,127.61/472.40
  6. Step 6: Final answer
    x = 410.94

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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.