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Finding the Fourth Proportional to 646.70, 970.25 and 372.99

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Solution

The fourth proportional to 646.70, 970.25 and 372.99 is: 559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.70 : 970.25 = 372.99 : x
  2. Step 2: Convert to fraction form
    646.70/970.25 = 372.99/x
  3. Step 3: Cross multiply
    646.70x = 970.25 × 372.99
  4. Step 4: Simplify right side
    646.70x = 361,892.76
  5. Step 5: Solve for x
    x = 361,892.76/646.70
  6. Step 6: Final answer
    x = 559.60

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1.5x scale

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.