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Finding the Fourth Proportional to 556.16, 767.15 and 414.25

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Solution

The fourth proportional to 556.16, 767.15 and 414.25 is: 571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.16 : 767.15 = 414.25 : x
  2. Step 2: Convert to fraction form
    556.16/767.15 = 414.25/x
  3. Step 3: Cross multiply
    556.16x = 767.15 × 414.25
  4. Step 4: Simplify right side
    556.16x = 317,791.89
  5. Step 5: Solve for x
    x = 317,791.89/556.16
  6. Step 6: Final answer
    x = 571.40

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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.