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Finding the Fourth Proportional to 703.10, 1,055.10 and 410.60

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Solution

The fourth proportional to 703.10, 1,055.10 and 410.60 is: 616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.10 : 1,055.10 = 410.60 : x
  2. Step 2: Convert to fraction form
    703.10/1,055.10 = 410.60/x
  3. Step 3: Cross multiply
    703.10x = 1,055.10 × 410.60
  4. Step 4: Simplify right side
    703.10x = 433,224.06
  5. Step 5: Solve for x
    x = 433,224.06/703.10
  6. Step 6: Final answer
    x = 616.16

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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.