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Finding the Fourth Proportional to 1,098.52, 1,513.38 and 903.16

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Solution

The fourth proportional to 1,098.52, 1,513.38 and 903.16 is: 1,244.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.52 : 1,513.38 = 903.16 : x
  2. Step 2: Convert to fraction form
    1,098.52/1,513.38 = 903.16/x
  3. Step 3: Cross multiply
    1,098.52x = 1,513.38 × 903.16
  4. Step 4: Simplify right side
    1,098.52x = 1,366,824.28
  5. Step 5: Solve for x
    x = 1,366,824.28/1,098.52
  6. Step 6: Final answer
    x = 1,244.24

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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.