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Finding the Fourth Proportional to 702.06, 1,053.30 and 355.02

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Solution

The fourth proportional to 702.06, 1,053.30 and 355.02 is: 532.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.06 : 1,053.30 = 355.02 : x
  2. Step 2: Convert to fraction form
    702.06/1,053.30 = 355.02/x
  3. Step 3: Cross multiply
    702.06x = 1,053.30 × 355.02
  4. Step 4: Simplify right side
    702.06x = 373,942.57
  5. Step 5: Solve for x
    x = 373,942.57/702.06
  6. Step 6: Final answer
    x = 532.64

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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.