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Finding the Fourth Proportional to 1,417.62, 2,124.93 and 539.70

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Solution

The fourth proportional to 1,417.62, 2,124.93 and 539.70 is: 808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.62 : 2,124.93 = 539.70 : x
  2. Step 2: Convert to fraction form
    1,417.62/2,124.93 = 539.70/x
  3. Step 3: Cross multiply
    1,417.62x = 2,124.93 × 539.70
  4. Step 4: Simplify right side
    1,417.62x = 1,146,824.72
  5. Step 5: Solve for x
    x = 1,146,824.72/1,417.62
  6. Step 6: Final answer
    x = 808.98

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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.