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Finding the Fourth Proportional to 1,061.78, 1,592.28 and 368.51

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Solution

The fourth proportional to 1,061.78, 1,592.28 and 368.51 is: 552.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.78 : 1,592.28 = 368.51 : x
  2. Step 2: Convert to fraction form
    1,061.78/1,592.28 = 368.51/x
  3. Step 3: Cross multiply
    1,061.78x = 1,592.28 × 368.51
  4. Step 4: Simplify right side
    1,061.78x = 586,763.14
  5. Step 5: Solve for x
    x = 586,763.14/1,061.78
  6. Step 6: Final answer
    x = 552.62

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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.