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Finding the Fourth Proportional to 1,036.30, 1,546.85 and 913.24

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Solution

The fourth proportional to 1,036.30, 1,546.85 and 913.24 is: 1,363.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.30 : 1,546.85 = 913.24 : x
  2. Step 2: Convert to fraction form
    1,036.30/1,546.85 = 913.24/x
  3. Step 3: Cross multiply
    1,036.30x = 1,546.85 × 913.24
  4. Step 4: Simplify right side
    1,036.30x = 1,412,645.29
  5. Step 5: Solve for x
    x = 1,412,645.29/1,036.30
  6. Step 6: Final answer
    x = 1,363.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.