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Finding the Fourth Proportional to 532.37, 734.37 and 311.28

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Solution

The fourth proportional to 532.37, 734.37 and 311.28 is: 429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.37 : 734.37 = 311.28 : x
  2. Step 2: Convert to fraction form
    532.37/734.37 = 311.28/x
  3. Step 3: Cross multiply
    532.37x = 734.37 × 311.28
  4. Step 4: Simplify right side
    532.37x = 228,590.77
  5. Step 5: Solve for x
    x = 228,590.77/532.37
  6. Step 6: Final answer
    x = 429.38

Related Problems

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Half scale
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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.