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Finding the Fourth Proportional to 1,017.21, 1,526.44 and 469.43

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Solution

The fourth proportional to 1,017.21, 1,526.44 and 469.43 is: 704.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.21 : 1,526.44 = 469.43 : x
  2. Step 2: Convert to fraction form
    1,017.21/1,526.44 = 469.43/x
  3. Step 3: Cross multiply
    1,017.21x = 1,526.44 × 469.43
  4. Step 4: Simplify right side
    1,017.21x = 716,559.30
  5. Step 5: Solve for x
    x = 716,559.30/1,017.21
  6. Step 6: Final answer
    x = 704.44

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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.