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Finding the Fourth Proportional to 526.90, 789.45 and 372.53

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Solution

The fourth proportional to 526.90, 789.45 and 372.53 is: 558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.90 : 789.45 = 372.53 : x
  2. Step 2: Convert to fraction form
    526.90/789.45 = 372.53/x
  3. Step 3: Cross multiply
    526.90x = 789.45 × 372.53
  4. Step 4: Simplify right side
    526.90x = 294,093.81
  5. Step 5: Solve for x
    x = 294,093.81/526.90
  6. Step 6: Final answer
    x = 558.16

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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.