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Finding the Fourth Proportional to 535.64, 739.10 and 302.76

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Solution

The fourth proportional to 535.64, 739.10 and 302.76 is: 417.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.64 : 739.10 = 302.76 : x
  2. Step 2: Convert to fraction form
    535.64/739.10 = 302.76/x
  3. Step 3: Cross multiply
    535.64x = 739.10 × 302.76
  4. Step 4: Simplify right side
    535.64x = 223,769.92
  5. Step 5: Solve for x
    x = 223,769.92/535.64
  6. Step 6: Final answer
    x = 417.76

Related Problems

Find fourth proportional to 267.82, 369.55 and 151.38
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Double scale
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Similar ratio
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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.