Home / 1,023.17-1,411.75-707.92

Finding the Fourth Proportional to 1,023.17, 1,411.75 and 707.92

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Solution

The fourth proportional to 1,023.17, 1,411.75 and 707.92 is: 976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.17 : 1,411.75 = 707.92 : x
  2. Step 2: Convert to fraction form
    1,023.17/1,411.75 = 707.92/x
  3. Step 3: Cross multiply
    1,023.17x = 1,411.75 × 707.92
  4. Step 4: Simplify right side
    1,023.17x = 999,406.06
  5. Step 5: Solve for x
    x = 999,406.06/1,023.17
  6. Step 6: Final answer
    x = 976.78

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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.