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Finding the Fourth Proportional to 674.53, 928.26 and 624.31

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Solution

The fourth proportional to 674.53, 928.26 and 624.31 is: 859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.53 : 928.26 = 624.31 : x
  2. Step 2: Convert to fraction form
    674.53/928.26 = 624.31/x
  3. Step 3: Cross multiply
    674.53x = 928.26 × 624.31
  4. Step 4: Simplify right side
    674.53x = 579,522.00
  5. Step 5: Solve for x
    x = 579,522.00/674.53
  6. Step 6: Final answer
    x = 859.15

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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.