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Finding the Fourth Proportional to 1,538.56, 2,307.98 and 564.42

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Solution

The fourth proportional to 1,538.56, 2,307.98 and 564.42 is: 846.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.56 : 2,307.98 = 564.42 : x
  2. Step 2: Convert to fraction form
    1,538.56/2,307.98 = 564.42/x
  3. Step 3: Cross multiply
    1,538.56x = 2,307.98 × 564.42
  4. Step 4: Simplify right side
    1,538.56x = 1,302,670.07
  5. Step 5: Solve for x
    x = 1,302,670.07/1,538.56
  6. Step 6: Final answer
    x = 846.68

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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.