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Finding the Fourth Proportional to 702.60, 968.10 and 654

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Solution

The fourth proportional to 702.60, 968.10 and 654 is: 901.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.60 : 968.10 = 654 : x
  2. Step 2: Convert to fraction form
    702.60/968.10 = 654/x
  3. Step 3: Cross multiply
    702.60x = 968.10 × 654
  4. Step 4: Simplify right side
    702.60x = 633,137.40
  5. Step 5: Solve for x
    x = 633,137.40/702.60
  6. Step 6: Final answer
    x = 901.13

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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.