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Finding the Fourth Proportional to 1,565.95, 2,345.79 and 745.02

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Solution

The fourth proportional to 1,565.95, 2,345.79 and 745.02 is: 1,116.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.95 : 2,345.79 = 745.02 : x
  2. Step 2: Convert to fraction form
    1,565.95/2,345.79 = 745.02/x
  3. Step 3: Cross multiply
    1,565.95x = 2,345.79 × 745.02
  4. Step 4: Simplify right side
    1,565.95x = 1,747,660.47
  5. Step 5: Solve for x
    x = 1,747,660.47/1,565.95
  6. Step 6: Final answer
    x = 1,116.04

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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.