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Finding the Fourth Proportional to 557.55, 767.75 and 459.14

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Solution

The fourth proportional to 557.55, 767.75 and 459.14 is: 632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.55 : 767.75 = 459.14 : x
  2. Step 2: Convert to fraction form
    557.55/767.75 = 459.14/x
  3. Step 3: Cross multiply
    557.55x = 767.75 × 459.14
  4. Step 4: Simplify right side
    557.55x = 352,498.60
  5. Step 5: Solve for x
    x = 352,498.60/557.55
  6. Step 6: Final answer
    x = 632.23

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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.