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Finding the Fourth Proportional to 445.77, 615.18 and 268.76

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Solution

The fourth proportional to 445.77, 615.18 and 268.76 is: 370.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.77 : 615.18 = 268.76 : x
  2. Step 2: Convert to fraction form
    445.77/615.18 = 268.76/x
  3. Step 3: Cross multiply
    445.77x = 615.18 × 268.76
  4. Step 4: Simplify right side
    445.77x = 165,335.78
  5. Step 5: Solve for x
    x = 165,335.78/445.77
  6. Step 6: Final answer
    x = 370.90

Related Problems

Find fourth proportional to 222.89, 307.59 and 134.38
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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.