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Finding the Fourth Proportional to 508.16, 758.44 and 436.16

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Solution

The fourth proportional to 508.16, 758.44 and 436.16 is: 650.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.16 : 758.44 = 436.16 : x
  2. Step 2: Convert to fraction form
    508.16/758.44 = 436.16/x
  3. Step 3: Cross multiply
    508.16x = 758.44 × 436.16
  4. Step 4: Simplify right side
    508.16x = 330,801.19
  5. Step 5: Solve for x
    x = 330,801.19/508.16
  6. Step 6: Final answer
    x = 650.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.