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Finding the Fourth Proportional to 554.48, 764.76 and 358.20

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Solution

The fourth proportional to 554.48, 764.76 and 358.20 is: 494.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.48 : 764.76 = 358.20 : x
  2. Step 2: Convert to fraction form
    554.48/764.76 = 358.20/x
  3. Step 3: Cross multiply
    554.48x = 764.76 × 358.20
  4. Step 4: Simplify right side
    554.48x = 273,937.03
  5. Step 5: Solve for x
    x = 273,937.03/554.48
  6. Step 6: Final answer
    x = 494.04

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.