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Finding the Fourth Proportional to 925.41, 1,276.59 and 626.67

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Solution

The fourth proportional to 925.41, 1,276.59 and 626.67 is: 864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.41 : 1,276.59 = 626.67 : x
  2. Step 2: Convert to fraction form
    925.41/1,276.59 = 626.67/x
  3. Step 3: Cross multiply
    925.41x = 1,276.59 × 626.67
  4. Step 4: Simplify right side
    925.41x = 800,000.66
  5. Step 5: Solve for x
    x = 800,000.66/925.41
  6. Step 6: Final answer
    x = 864.48

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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.