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Finding the Fourth Proportional to 1,147.03, 1,582.90 and 623.06

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Solution

The fourth proportional to 1,147.03, 1,582.90 and 623.06 is: 859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.03 : 1,582.90 = 623.06 : x
  2. Step 2: Convert to fraction form
    1,147.03/1,582.90 = 623.06/x
  3. Step 3: Cross multiply
    1,147.03x = 1,582.90 × 623.06
  4. Step 4: Simplify right side
    1,147.03x = 986,238.14
  5. Step 5: Solve for x
    x = 986,238.14/1,147.03
  6. Step 6: Final answer
    x = 859.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.