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Finding the Fourth Proportional to 581.60, 870.60 and 563.60

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Solution

The fourth proportional to 581.60, 870.60 and 563.60 is: 843.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.60 : 870.60 = 563.60 : x
  2. Step 2: Convert to fraction form
    581.60/870.60 = 563.60/x
  3. Step 3: Cross multiply
    581.60x = 870.60 × 563.60
  4. Step 4: Simplify right side
    581.60x = 490,670.16
  5. Step 5: Solve for x
    x = 490,670.16/581.60
  6. Step 6: Final answer
    x = 843.66

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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.