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Finding the Fourth Proportional to 583.80, 874.80 and 551.40

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Solution

The fourth proportional to 583.80, 874.80 and 551.40 is: 826.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.80 : 874.80 = 551.40 : x
  2. Step 2: Convert to fraction form
    583.80/874.80 = 551.40/x
  3. Step 3: Cross multiply
    583.80x = 874.80 × 551.40
  4. Step 4: Simplify right side
    583.80x = 482,364.72
  5. Step 5: Solve for x
    x = 482,364.72/583.80
  6. Step 6: Final answer
    x = 826.25

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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.