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Finding the Fourth Proportional to 581.00, 870.66 and 459.50

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Solution

The fourth proportional to 581.00, 870.66 and 459.50 is: 688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.00 : 870.66 = 459.50 : x
  2. Step 2: Convert to fraction form
    581.00/870.66 = 459.50/x
  3. Step 3: Cross multiply
    581.00x = 870.66 × 459.50
  4. Step 4: Simplify right side
    581.00x = 400,063.92
  5. Step 5: Solve for x
    x = 400,063.92/581.00
  6. Step 6: Final answer
    x = 688.58

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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.