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Finding the Fourth Proportional to 1,044.70, 1,567.05 and 971.80

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Solution

The fourth proportional to 1,044.70, 1,567.05 and 971.80 is: 1,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.70 : 1,567.05 = 971.80 : x
  2. Step 2: Convert to fraction form
    1,044.70/1,567.05 = 971.80/x
  3. Step 3: Cross multiply
    1,044.70x = 1,567.05 × 971.80
  4. Step 4: Simplify right side
    1,044.70x = 1,522,859.19
  5. Step 5: Solve for x
    x = 1,522,859.19/1,044.70
  6. Step 6: Final answer
    x = 1,457.70

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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.