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Finding the Fourth Proportional to 1,565.65, 2,348.78 and 469.92

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Solution

The fourth proportional to 1,565.65, 2,348.78 and 469.92 is: 704.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.65 : 2,348.78 = 469.92 : x
  2. Step 2: Convert to fraction form
    1,565.65/2,348.78 = 469.92/x
  3. Step 3: Cross multiply
    1,565.65x = 2,348.78 × 469.92
  4. Step 4: Simplify right side
    1,565.65x = 1,103,738.70
  5. Step 5: Solve for x
    x = 1,103,738.70/1,565.65
  6. Step 6: Final answer
    x = 704.97

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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.