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Finding the Fourth Proportional to 572.40, 854.40 and 499.44

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Solution

The fourth proportional to 572.40, 854.40 and 499.44 is: 745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.40 : 854.40 = 499.44 : x
  2. Step 2: Convert to fraction form
    572.40/854.40 = 499.44/x
  3. Step 3: Cross multiply
    572.40x = 854.40 × 499.44
  4. Step 4: Simplify right side
    572.40x = 426,721.54
  5. Step 5: Solve for x
    x = 426,721.54/572.40
  6. Step 6: Final answer
    x = 745.50

Related Problems

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.