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Finding the Fourth Proportional to 497.58, 690.18 and 484.26

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Solution

The fourth proportional to 497.58, 690.18 and 484.26 is: 671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.58 : 690.18 = 484.26 : x
  2. Step 2: Convert to fraction form
    497.58/690.18 = 484.26/x
  3. Step 3: Cross multiply
    497.58x = 690.18 × 484.26
  4. Step 4: Simplify right side
    497.58x = 334,226.57
  5. Step 5: Solve for x
    x = 334,226.57/497.58
  6. Step 6: Final answer
    x = 671.70

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.