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Finding the Fourth Proportional to 702.89, 969.93 and 404.18

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Solution

The fourth proportional to 702.89, 969.93 and 404.18 is: 557.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.89 : 969.93 = 404.18 : x
  2. Step 2: Convert to fraction form
    702.89/969.93 = 404.18/x
  3. Step 3: Cross multiply
    702.89x = 969.93 × 404.18
  4. Step 4: Simplify right side
    702.89x = 392,024.29
  5. Step 5: Solve for x
    x = 392,024.29/702.89
  6. Step 6: Final answer
    x = 557.74

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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.