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Finding the Fourth Proportional to 1,054.87, 1,582.14 and 469.74

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Solution

The fourth proportional to 1,054.87, 1,582.14 and 469.74 is: 704.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.87 : 1,582.14 = 469.74 : x
  2. Step 2: Convert to fraction form
    1,054.87/1,582.14 = 469.74/x
  3. Step 3: Cross multiply
    1,054.87x = 1,582.14 × 469.74
  4. Step 4: Simplify right side
    1,054.87x = 743,190.60
  5. Step 5: Solve for x
    x = 743,190.60/1,054.87
  6. Step 6: Final answer
    x = 704.53

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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.