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Finding the Fourth Proportional to 702.95, 969.68 and 493.04

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Solution

The fourth proportional to 702.95, 969.68 and 493.04 is: 680.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.95 : 969.68 = 493.04 : x
  2. Step 2: Convert to fraction form
    702.95/969.68 = 493.04/x
  3. Step 3: Cross multiply
    702.95x = 969.68 × 493.04
  4. Step 4: Simplify right side
    702.95x = 478,083.71
  5. Step 5: Solve for x
    x = 478,083.71/702.95
  6. Step 6: Final answer
    x = 680.12

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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.