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Finding the Fourth Proportional to 1,098.02, 1,514.76 and 749.18

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Solution

The fourth proportional to 1,098.02, 1,514.76 and 749.18 is: 1,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.02 : 1,514.76 = 749.18 : x
  2. Step 2: Convert to fraction form
    1,098.02/1,514.76 = 749.18/x
  3. Step 3: Cross multiply
    1,098.02x = 1,514.76 × 749.18
  4. Step 4: Simplify right side
    1,098.02x = 1,134,827.90
  5. Step 5: Solve for x
    x = 1,134,827.90/1,098.02
  6. Step 6: Final answer
    x = 1,033.52

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Half scale
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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.