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Finding the Fourth Proportional to 551.61, 754.72 and 549.32

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Solution

The fourth proportional to 551.61, 754.72 and 549.32 is: 751.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.61 : 754.72 = 549.32 : x
  2. Step 2: Convert to fraction form
    551.61/754.72 = 549.32/x
  3. Step 3: Cross multiply
    551.61x = 754.72 × 549.32
  4. Step 4: Simplify right side
    551.61x = 414,577.64
  5. Step 5: Solve for x
    x = 414,577.64/551.61
  6. Step 6: Final answer
    x = 751.58

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.