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Finding the Fourth Proportional to 430.13, 592.97 and 355.19

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Solution

The fourth proportional to 430.13, 592.97 and 355.19 is: 489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.13 : 592.97 = 355.19 : x
  2. Step 2: Convert to fraction form
    430.13/592.97 = 355.19/x
  3. Step 3: Cross multiply
    430.13x = 592.97 × 355.19
  4. Step 4: Simplify right side
    430.13x = 210,612.27
  5. Step 5: Solve for x
    x = 210,612.27/430.13
  6. Step 6: Final answer
    x = 489.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.