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Finding the Fourth Proportional to 702.45, 968.63 and 503.19

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Solution

The fourth proportional to 702.45, 968.63 and 503.19 is: 693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.45 : 968.63 = 503.19 : x
  2. Step 2: Convert to fraction form
    702.45/968.63 = 503.19/x
  3. Step 3: Cross multiply
    702.45x = 968.63 × 503.19
  4. Step 4: Simplify right side
    702.45x = 487,402.41
  5. Step 5: Solve for x
    x = 487,402.41/702.45
  6. Step 6: Final answer
    x = 693.86

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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.