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Finding the Fourth Proportional to 1,179.71, 1,769.29 and 530.63

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Solution

The fourth proportional to 1,179.71, 1,769.29 and 530.63 is: 795.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.71 : 1,769.29 = 530.63 : x
  2. Step 2: Convert to fraction form
    1,179.71/1,769.29 = 530.63/x
  3. Step 3: Cross multiply
    1,179.71x = 1,769.29 × 530.63
  4. Step 4: Simplify right side
    1,179.71x = 938,828.18
  5. Step 5: Solve for x
    x = 938,828.18/1,179.71
  6. Step 6: Final answer
    x = 795.82

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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.