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Finding the Fourth Proportional to 524.85, 787.15 and 261.04

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Solution

The fourth proportional to 524.85, 787.15 and 261.04 is: 391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.85 : 787.15 = 261.04 : x
  2. Step 2: Convert to fraction form
    524.85/787.15 = 261.04/x
  3. Step 3: Cross multiply
    524.85x = 787.15 × 261.04
  4. Step 4: Simplify right side
    524.85x = 205,477.64
  5. Step 5: Solve for x
    x = 205,477.64/524.85
  6. Step 6: Final answer
    x = 391.50

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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.