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Finding the Fourth Proportional to 525, 787.50 and 319.44

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Solution

The fourth proportional to 525, 787.50 and 319.44 is: 479.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    525 : 787.50 = 319.44 : x
  2. Step 2: Convert to fraction form
    525/787.50 = 319.44/x
  3. Step 3: Cross multiply
    525x = 787.50 × 319.44
  4. Step 4: Simplify right side
    525x = 251,559
  5. Step 5: Solve for x
    x = 251,559/525
  6. Step 6: Final answer
    x = 479.16

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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.