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Finding the Fourth Proportional to 526.40, 788.70 and 372.03

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Solution

The fourth proportional to 526.40, 788.70 and 372.03 is: 557.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.40 : 788.70 = 372.03 : x
  2. Step 2: Convert to fraction form
    526.40/788.70 = 372.03/x
  3. Step 3: Cross multiply
    526.40x = 788.70 × 372.03
  4. Step 4: Simplify right side
    526.40x = 293,418.58
  5. Step 5: Solve for x
    x = 293,418.58/526.40
  6. Step 6: Final answer
    x = 557.41

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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.