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Finding the Fourth Proportional to 702.15, 968.93 and 407.37

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Solution

The fourth proportional to 702.15, 968.93 and 407.37 is: 562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.15 : 968.93 = 407.37 : x
  2. Step 2: Convert to fraction form
    702.15/968.93 = 407.37/x
  3. Step 3: Cross multiply
    702.15x = 968.93 × 407.37
  4. Step 4: Simplify right side
    702.15x = 394,710.98
  5. Step 5: Solve for x
    x = 394,710.98/702.15
  6. Step 6: Final answer
    x = 562.15

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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.