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Finding the Fourth Proportional to 1,153.59, 1,592.11 and 649.49

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Solution

The fourth proportional to 1,153.59, 1,592.11 and 649.49 is: 896.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.59 : 1,592.11 = 649.49 : x
  2. Step 2: Convert to fraction form
    1,153.59/1,592.11 = 649.49/x
  3. Step 3: Cross multiply
    1,153.59x = 1,592.11 × 649.49
  4. Step 4: Simplify right side
    1,153.59x = 1,034,062.16
  5. Step 5: Solve for x
    x = 1,034,062.16/1,153.59
  6. Step 6: Final answer
    x = 896.38

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Double scale
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1.5x scale

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.