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Finding the Fourth Proportional to 702.75, 969.57 and 554.91

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Solution

The fourth proportional to 702.75, 969.57 and 554.91 is: 765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.75 : 969.57 = 554.91 : x
  2. Step 2: Convert to fraction form
    702.75/969.57 = 554.91/x
  3. Step 3: Cross multiply
    702.75x = 969.57 × 554.91
  4. Step 4: Simplify right side
    702.75x = 538,024.09
  5. Step 5: Solve for x
    x = 538,024.09/702.75
  6. Step 6: Final answer
    x = 765.60

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1.5x scale

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.