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Finding the Fourth Proportional to 532.80, 734.76 and 467.28

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Solution

The fourth proportional to 532.80, 734.76 and 467.28 is: 644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.80 : 734.76 = 467.28 : x
  2. Step 2: Convert to fraction form
    532.80/734.76 = 467.28/x
  3. Step 3: Cross multiply
    532.80x = 734.76 × 467.28
  4. Step 4: Simplify right side
    532.80x = 343,338.65
  5. Step 5: Solve for x
    x = 343,338.65/532.80
  6. Step 6: Final answer
    x = 644.40

Related Problems

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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.