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Finding the Fourth Proportional to 1,494.99, 2,242.35 and 521.10

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Solution

The fourth proportional to 1,494.99, 2,242.35 and 521.10 is: 781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.99 : 2,242.35 = 521.10 : x
  2. Step 2: Convert to fraction form
    1,494.99/2,242.35 = 521.10/x
  3. Step 3: Cross multiply
    1,494.99x = 2,242.35 × 521.10
  4. Step 4: Simplify right side
    1,494.99x = 1,168,488.59
  5. Step 5: Solve for x
    x = 1,168,488.59/1,494.99
  6. Step 6: Final answer
    x = 781.60

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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.