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Finding the Fourth Proportional to 942.94, 1,301.25 and 528.94

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Solution

The fourth proportional to 942.94, 1,301.25 and 528.94 is: 729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.94 : 1,301.25 = 528.94 : x
  2. Step 2: Convert to fraction form
    942.94/1,301.25 = 528.94/x
  3. Step 3: Cross multiply
    942.94x = 1,301.25 × 528.94
  4. Step 4: Simplify right side
    942.94x = 688,281.91
  5. Step 5: Solve for x
    x = 688,281.91/942.94
  6. Step 6: Final answer
    x = 729.93

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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.