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Finding the Fourth Proportional to 1,429.70, 2,145.51 and 564.02

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Solution

The fourth proportional to 1,429.70, 2,145.51 and 564.02 is: 846.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.70 : 2,145.51 = 564.02 : x
  2. Step 2: Convert to fraction form
    1,429.70/2,145.51 = 564.02/x
  3. Step 3: Cross multiply
    1,429.70x = 2,145.51 × 564.02
  4. Step 4: Simplify right side
    1,429.70x = 1,210,110.55
  5. Step 5: Solve for x
    x = 1,210,110.55/1,429.70
  6. Step 6: Final answer
    x = 846.41

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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.