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Finding the Fourth Proportional to 1,498.79, 2,248.21 and 574.40

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Solution

The fourth proportional to 1,498.79, 2,248.21 and 574.40 is: 861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,498.79 : 2,248.21 = 574.40 : x
  2. Step 2: Convert to fraction form
    1,498.79/2,248.21 = 574.40/x
  3. Step 3: Cross multiply
    1,498.79x = 2,248.21 × 574.40
  4. Step 4: Simplify right side
    1,498.79x = 1,291,359.15
  5. Step 5: Solve for x
    x = 1,291,359.15/1,498.79
  6. Step 6: Final answer
    x = 861.60

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1.5x scale

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.