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Finding the Fourth Proportional to 702.90, 970.45 and 555.08

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Solution

The fourth proportional to 702.90, 970.45 and 555.08 is: 766.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.90 : 970.45 = 555.08 : x
  2. Step 2: Convert to fraction form
    702.90/970.45 = 555.08/x
  3. Step 3: Cross multiply
    702.90x = 970.45 × 555.08
  4. Step 4: Simplify right side
    702.90x = 538,671.15
  5. Step 5: Solve for x
    x = 538,671.15/702.90
  6. Step 6: Final answer
    x = 766.36

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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.