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Finding the Fourth Proportional to 846.16, 1,269.36 and 435.34

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Solution

The fourth proportional to 846.16, 1,269.36 and 435.34 is: 653.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.16 : 1,269.36 = 435.34 : x
  2. Step 2: Convert to fraction form
    846.16/1,269.36 = 435.34/x
  3. Step 3: Cross multiply
    846.16x = 1,269.36 × 435.34
  4. Step 4: Simplify right side
    846.16x = 552,603.18
  5. Step 5: Solve for x
    x = 552,603.18/846.16
  6. Step 6: Final answer
    x = 653.07

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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.