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Finding the Fourth Proportional to 1,563.48, 2,345.34 and 589.40

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Solution

The fourth proportional to 1,563.48, 2,345.34 and 589.40 is: 884.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.48 : 2,345.34 = 589.40 : x
  2. Step 2: Convert to fraction form
    1,563.48/2,345.34 = 589.40/x
  3. Step 3: Cross multiply
    1,563.48x = 2,345.34 × 589.40
  4. Step 4: Simplify right side
    1,563.48x = 1,382,343.40
  5. Step 5: Solve for x
    x = 1,382,343.40/1,563.48
  6. Step 6: Final answer
    x = 884.15

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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.