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Finding the Fourth Proportional to 1,534.48, 2,301.78 and 494.47

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Solution

The fourth proportional to 1,534.48, 2,301.78 and 494.47 is: 741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.48 : 2,301.78 = 494.47 : x
  2. Step 2: Convert to fraction form
    1,534.48/2,301.78 = 494.47/x
  3. Step 3: Cross multiply
    1,534.48x = 2,301.78 × 494.47
  4. Step 4: Simplify right side
    1,534.48x = 1,138,161.16
  5. Step 5: Solve for x
    x = 1,138,161.16/1,534.48
  6. Step 6: Final answer
    x = 741.72

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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.