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Finding the Fourth Proportional to 1,240.34, 1,857.46 and 589.50

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Solution

The fourth proportional to 1,240.34, 1,857.46 and 589.50 is: 882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.34 : 1,857.46 = 589.50 : x
  2. Step 2: Convert to fraction form
    1,240.34/1,857.46 = 589.50/x
  3. Step 3: Cross multiply
    1,240.34x = 1,857.46 × 589.50
  4. Step 4: Simplify right side
    1,240.34x = 1,094,972.67
  5. Step 5: Solve for x
    x = 1,094,972.67/1,240.34
  6. Step 6: Final answer
    x = 882.80

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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.