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Finding the Fourth Proportional to 902.93, 1,355.06 and 470.39

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Solution

The fourth proportional to 902.93, 1,355.06 and 470.39 is: 705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.93 : 1,355.06 = 470.39 : x
  2. Step 2: Convert to fraction form
    902.93/1,355.06 = 470.39/x
  3. Step 3: Cross multiply
    902.93x = 1,355.06 × 470.39
  4. Step 4: Simplify right side
    902.93x = 637,397.55
  5. Step 5: Solve for x
    x = 637,397.55/902.93
  6. Step 6: Final answer
    x = 705.93

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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.