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Finding the Fourth Proportional to 525.38, 788.08 and 216.90

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Solution

The fourth proportional to 525.38, 788.08 and 216.90 is: 325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.38 : 788.08 = 216.90 : x
  2. Step 2: Convert to fraction form
    525.38/788.08 = 216.90/x
  3. Step 3: Cross multiply
    525.38x = 788.08 × 216.90
  4. Step 4: Simplify right side
    525.38x = 170,934.01
  5. Step 5: Solve for x
    x = 170,934.01/525.38
  6. Step 6: Final answer
    x = 325.35

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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.