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Finding the Fourth Proportional to 702.02, 1,053.02 and 215.00

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Solution

The fourth proportional to 702.02, 1,053.02 and 215.00 is: 322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.02 : 1,053.02 = 215.00 : x
  2. Step 2: Convert to fraction form
    702.02/1,053.02 = 215.00/x
  3. Step 3: Cross multiply
    702.02x = 1,053.02 × 215.00
  4. Step 4: Simplify right side
    702.02x = 226,401.93
  5. Step 5: Solve for x
    x = 226,401.93/702.02
  6. Step 6: Final answer
    x = 322.50

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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.