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Finding the Fourth Proportional to 540.58, 746.03 and 307.69

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Solution

The fourth proportional to 540.58, 746.03 and 307.69 is: 424.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.58 : 746.03 = 307.69 : x
  2. Step 2: Convert to fraction form
    540.58/746.03 = 307.69/x
  3. Step 3: Cross multiply
    540.58x = 746.03 × 307.69
  4. Step 4: Simplify right side
    540.58x = 229,545.97
  5. Step 5: Solve for x
    x = 229,545.97/540.58
  6. Step 6: Final answer
    x = 424.63

Related Problems

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Double scale
Find fourth proportional to 541.58, 747.41 and 308.69
Similar ratio
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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.