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Finding the Fourth Proportional to 469.95, 705.33 and 340.35

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Solution

The fourth proportional to 469.95, 705.33 and 340.35 is: 510.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.95 : 705.33 = 340.35 : x
  2. Step 2: Convert to fraction form
    469.95/705.33 = 340.35/x
  3. Step 3: Cross multiply
    469.95x = 705.33 × 340.35
  4. Step 4: Simplify right side
    469.95x = 240,059.07
  5. Step 5: Solve for x
    x = 240,059.07/469.95
  6. Step 6: Final answer
    x = 510.82

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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.