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Finding the Fourth Proportional to 964.46, 1,330.08 and 632.76

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Solution

The fourth proportional to 964.46, 1,330.08 and 632.76 is: 872.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.46 : 1,330.08 = 632.76 : x
  2. Step 2: Convert to fraction form
    964.46/1,330.08 = 632.76/x
  3. Step 3: Cross multiply
    964.46x = 1,330.08 × 632.76
  4. Step 4: Simplify right side
    964.46x = 841,621.42
  5. Step 5: Solve for x
    x = 841,621.42/964.46
  6. Step 6: Final answer
    x = 872.63

Related Problems

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Half scale
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Double scale
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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.