Home / 1,126.53-1,690.16-433.17

Finding the Fourth Proportional to 1,126.53, 1,690.16 and 433.17

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Solution

The fourth proportional to 1,126.53, 1,690.16 and 433.17 is: 649.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.53 : 1,690.16 = 433.17 : x
  2. Step 2: Convert to fraction form
    1,126.53/1,690.16 = 433.17/x
  3. Step 3: Cross multiply
    1,126.53x = 1,690.16 × 433.17
  4. Step 4: Simplify right side
    1,126.53x = 732,124.44
  5. Step 5: Solve for x
    x = 732,124.44/1,126.53
  6. Step 6: Final answer
    x = 649.89

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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.