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Finding the Fourth Proportional to 734.04, 1,010.76 and 664.60

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Solution

The fourth proportional to 734.04, 1,010.76 and 664.60 is: 915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.04 : 1,010.76 = 664.60 : x
  2. Step 2: Convert to fraction form
    734.04/1,010.76 = 664.60/x
  3. Step 3: Cross multiply
    734.04x = 1,010.76 × 664.60
  4. Step 4: Simplify right side
    734.04x = 671,751.10
  5. Step 5: Solve for x
    x = 671,751.10/734.04
  6. Step 6: Final answer
    x = 915.14

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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.