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Finding the Fourth Proportional to 1,009.76, 1,515.00 and 593.64

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Solution

The fourth proportional to 1,009.76, 1,515.00 and 593.64 is: 890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.76 : 1,515.00 = 593.64 : x
  2. Step 2: Convert to fraction form
    1,009.76/1,515.00 = 593.64/x
  3. Step 3: Cross multiply
    1,009.76x = 1,515.00 × 593.64
  4. Step 4: Simplify right side
    1,009.76x = 899,366.83
  5. Step 5: Solve for x
    x = 899,366.83/1,009.76
  6. Step 6: Final answer
    x = 890.68

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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.