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Finding the Fourth Proportional to 625.26, 935.70 and 430.50

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Solution

The fourth proportional to 625.26, 935.70 and 430.50 is: 644.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.26 : 935.70 = 430.50 : x
  2. Step 2: Convert to fraction form
    625.26/935.70 = 430.50/x
  3. Step 3: Cross multiply
    625.26x = 935.70 × 430.50
  4. Step 4: Simplify right side
    625.26x = 402,818.85
  5. Step 5: Solve for x
    x = 402,818.85/625.26
  6. Step 6: Final answer
    x = 644.24

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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.