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Finding the Fourth Proportional to 907.02, 1,250.10 and 710.10

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Solution

The fourth proportional to 907.02, 1,250.10 and 710.10 is: 978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.02 : 1,250.10 = 710.10 : x
  2. Step 2: Convert to fraction form
    907.02/1,250.10 = 710.10/x
  3. Step 3: Cross multiply
    907.02x = 1,250.10 × 710.10
  4. Step 4: Simplify right side
    907.02x = 887,696.01
  5. Step 5: Solve for x
    x = 887,696.01/907.02
  6. Step 6: Final answer
    x = 978.70

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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.