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Finding the Fourth Proportional to 553.38, 763.63 and 332.28

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Solution

The fourth proportional to 553.38, 763.63 and 332.28 is: 458.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.38 : 763.63 = 332.28 : x
  2. Step 2: Convert to fraction form
    553.38/763.63 = 332.28/x
  3. Step 3: Cross multiply
    553.38x = 763.63 × 332.28
  4. Step 4: Simplify right side
    553.38x = 253,738.98
  5. Step 5: Solve for x
    x = 253,738.98/553.38
  6. Step 6: Final answer
    x = 458.53

Related Problems

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Double scale
Find fourth proportional to 554.38, 765.01 and 333.28
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.