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Finding the Fourth Proportional to 835.49, 1,253.68 and 470.30

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Solution

The fourth proportional to 835.49, 1,253.68 and 470.30 is: 705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.49 : 1,253.68 = 470.30 : x
  2. Step 2: Convert to fraction form
    835.49/1,253.68 = 470.30/x
  3. Step 3: Cross multiply
    835.49x = 1,253.68 × 470.30
  4. Step 4: Simplify right side
    835.49x = 589,603.35
  5. Step 5: Solve for x
    x = 589,603.35/835.49
  6. Step 6: Final answer
    x = 705.70

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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.