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Finding the Fourth Proportional to 1,392.71, 2,089.08 and 468.09

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Solution

The fourth proportional to 1,392.71, 2,089.08 and 468.09 is: 702.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.71 : 2,089.08 = 468.09 : x
  2. Step 2: Convert to fraction form
    1,392.71/2,089.08 = 468.09/x
  3. Step 3: Cross multiply
    1,392.71x = 2,089.08 × 468.09
  4. Step 4: Simplify right side
    1,392.71x = 977,877.46
  5. Step 5: Solve for x
    x = 977,877.46/1,392.71
  6. Step 6: Final answer
    x = 702.14

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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.