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Finding the Fourth Proportional to 702.70, 1,054.35 and 377.69

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Solution

The fourth proportional to 702.70, 1,054.35 and 377.69 is: 566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.70 : 1,054.35 = 377.69 : x
  2. Step 2: Convert to fraction form
    702.70/1,054.35 = 377.69/x
  3. Step 3: Cross multiply
    702.70x = 1,054.35 × 377.69
  4. Step 4: Simplify right side
    702.70x = 398,217.45
  5. Step 5: Solve for x
    x = 398,217.45/702.70
  6. Step 6: Final answer
    x = 566.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.