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Finding the Fourth Proportional to 622.60, 931.98 and 584.20

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Solution

The fourth proportional to 622.60, 931.98 and 584.20 is: 874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.60 : 931.98 = 584.20 : x
  2. Step 2: Convert to fraction form
    622.60/931.98 = 584.20/x
  3. Step 3: Cross multiply
    622.60x = 931.98 × 584.20
  4. Step 4: Simplify right side
    622.60x = 544,462.72
  5. Step 5: Solve for x
    x = 544,462.72/622.60
  6. Step 6: Final answer
    x = 874.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.