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Finding the Fourth Proportional to 526.32, 788.76 and 381.36

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Solution

The fourth proportional to 526.32, 788.76 and 381.36 is: 571.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.32 : 788.76 = 381.36 : x
  2. Step 2: Convert to fraction form
    526.32/788.76 = 381.36/x
  3. Step 3: Cross multiply
    526.32x = 788.76 × 381.36
  4. Step 4: Simplify right side
    526.32x = 300,801.51
  5. Step 5: Solve for x
    x = 300,801.51/526.32
  6. Step 6: Final answer
    x = 571.52

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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.