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Finding the Fourth Proportional to 526.89, 790.34 and 238.53

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Solution

The fourth proportional to 526.89, 790.34 and 238.53 is: 357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.89 : 790.34 = 238.53 : x
  2. Step 2: Convert to fraction form
    526.89/790.34 = 238.53/x
  3. Step 3: Cross multiply
    526.89x = 790.34 × 238.53
  4. Step 4: Simplify right side
    526.89x = 188,518.61
  5. Step 5: Solve for x
    x = 188,518.61/526.89
  6. Step 6: Final answer
    x = 357.80

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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.