Home / 1,117.17-1,675.89-424.08

Finding the Fourth Proportional to 1,117.17, 1,675.89 and 424.08

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Solution

The fourth proportional to 1,117.17, 1,675.89 and 424.08 is: 636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.17 : 1,675.89 = 424.08 : x
  2. Step 2: Convert to fraction form
    1,117.17/1,675.89 = 424.08/x
  3. Step 3: Cross multiply
    1,117.17x = 1,675.89 × 424.08
  4. Step 4: Simplify right side
    1,117.17x = 710,711.43
  5. Step 5: Solve for x
    x = 710,711.43/1,117.17
  6. Step 6: Final answer
    x = 636.17

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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.