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Finding the Fourth Proportional to 526.26, 788.51 and 320.20

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Solution

The fourth proportional to 526.26, 788.51 and 320.20 is: 479.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.26 : 788.51 = 320.20 : x
  2. Step 2: Convert to fraction form
    526.26/788.51 = 320.20/x
  3. Step 3: Cross multiply
    526.26x = 788.51 × 320.20
  4. Step 4: Simplify right side
    526.26x = 252,484.07
  5. Step 5: Solve for x
    x = 252,484.07/526.26
  6. Step 6: Final answer
    x = 479.77

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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.