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Finding the Fourth Proportional to 524.67, 787.61 and 319.33

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Solution

The fourth proportional to 524.67, 787.61 and 319.33 is: 479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.67 : 787.61 = 319.33 : x
  2. Step 2: Convert to fraction form
    524.67/787.61 = 319.33/x
  3. Step 3: Cross multiply
    524.67x = 787.61 × 319.33
  4. Step 4: Simplify right side
    524.67x = 251,507.50
  5. Step 5: Solve for x
    x = 251,507.50/524.67
  6. Step 6: Final answer
    x = 479.36

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