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Finding the Fourth Proportional to 525.95, 788.05 and 319.89

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Solution

The fourth proportional to 525.95, 788.05 and 319.89 is: 479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.95 : 788.05 = 319.89 : x
  2. Step 2: Convert to fraction form
    525.95/788.05 = 319.89/x
  3. Step 3: Cross multiply
    525.95x = 788.05 × 319.89
  4. Step 4: Simplify right side
    525.95x = 252,087.91
  5. Step 5: Solve for x
    x = 252,087.91/525.95
  6. Step 6: Final answer
    x = 479.30

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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.