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Finding the Fourth Proportional to 540.19, 745.52 and 330.49

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Solution

The fourth proportional to 540.19, 745.52 and 330.49 is: 456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.19 : 745.52 = 330.49 : x
  2. Step 2: Convert to fraction form
    540.19/745.52 = 330.49/x
  3. Step 3: Cross multiply
    540.19x = 745.52 × 330.49
  4. Step 4: Simplify right side
    540.19x = 246,386.90
  5. Step 5: Solve for x
    x = 246,386.90/540.19
  6. Step 6: Final answer
    x = 456.11

Related Problems

Find fourth proportional to 270.10, 372.76 and 165.25
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.