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Finding the Fourth Proportional to 936.04, 1,289.63 and 652.19

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Solution

The fourth proportional to 936.04, 1,289.63 and 652.19 is: 898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.04 : 1,289.63 = 652.19 : x
  2. Step 2: Convert to fraction form
    936.04/1,289.63 = 652.19/x
  3. Step 3: Cross multiply
    936.04x = 1,289.63 × 652.19
  4. Step 4: Simplify right side
    936.04x = 841,080.53
  5. Step 5: Solve for x
    x = 841,080.53/936.04
  6. Step 6: Final answer
    x = 898.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.