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Finding the Fourth Proportional to 434.42, 598.28 and 395.50

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Solution

The fourth proportional to 434.42, 598.28 and 395.50 is: 544.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.42 : 598.28 = 395.50 : x
  2. Step 2: Convert to fraction form
    434.42/598.28 = 395.50/x
  3. Step 3: Cross multiply
    434.42x = 598.28 × 395.50
  4. Step 4: Simplify right side
    434.42x = 236,617.13
  5. Step 5: Solve for x
    x = 236,617.13/434.42
  6. Step 6: Final answer
    x = 544.67

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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.