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Finding the Fourth Proportional to 534.76, 737.81 and 313.72

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Solution

The fourth proportional to 534.76, 737.81 and 313.72 is: 432.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.76 : 737.81 = 313.72 : x
  2. Step 2: Convert to fraction form
    534.76/737.81 = 313.72/x
  3. Step 3: Cross multiply
    534.76x = 737.81 × 313.72
  4. Step 4: Simplify right side
    534.76x = 231,463.52
  5. Step 5: Solve for x
    x = 231,463.52/534.76
  6. Step 6: Final answer
    x = 432.84

Related Problems

Find fourth proportional to 267.38, 368.90 and 156.86
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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.