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Finding the Fourth Proportional to 962.76, 1,327.56 and 631.20

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Solution

The fourth proportional to 962.76, 1,327.56 and 631.20 is: 870.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.76 : 1,327.56 = 631.20 : x
  2. Step 2: Convert to fraction form
    962.76/1,327.56 = 631.20/x
  3. Step 3: Cross multiply
    962.76x = 1,327.56 × 631.20
  4. Step 4: Simplify right side
    962.76x = 837,955.87
  5. Step 5: Solve for x
    x = 837,955.87/962.76
  6. Step 6: Final answer
    x = 870.37

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.