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Finding the Fourth Proportional to 571.23, 788.72 and 562.15

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Solution

The fourth proportional to 571.23, 788.72 and 562.15 is: 776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.23 : 788.72 = 562.15 : x
  2. Step 2: Convert to fraction form
    571.23/788.72 = 562.15/x
  3. Step 3: Cross multiply
    571.23x = 788.72 × 562.15
  4. Step 4: Simplify right side
    571.23x = 443,378.95
  5. Step 5: Solve for x
    x = 443,378.95/571.23
  6. Step 6: Final answer
    x = 776.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.