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Finding the Fourth Proportional to 434.64, 598.32 and 355.68

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Solution

The fourth proportional to 434.64, 598.32 and 355.68 is: 489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.64 : 598.32 = 355.68 : x
  2. Step 2: Convert to fraction form
    434.64/598.32 = 355.68/x
  3. Step 3: Cross multiply
    434.64x = 598.32 × 355.68
  4. Step 4: Simplify right side
    434.64x = 212,810.46
  5. Step 5: Solve for x
    x = 212,810.46/434.64
  6. Step 6: Final answer
    x = 489.62

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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.