Home / 1,126.49-1,690.01-433.15

Finding the Fourth Proportional to 1,126.49, 1,690.01 and 433.15

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Solution

The fourth proportional to 1,126.49, 1,690.01 and 433.15 is: 649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.49 : 1,690.01 = 433.15 : x
  2. Step 2: Convert to fraction form
    1,126.49/1,690.01 = 433.15/x
  3. Step 3: Cross multiply
    1,126.49x = 1,690.01 × 433.15
  4. Step 4: Simplify right side
    1,126.49x = 732,017.22
  5. Step 5: Solve for x
    x = 732,017.22/1,126.49
  6. Step 6: Final answer
    x = 649.82

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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.