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Finding the Fourth Proportional to 612.88, 917.16 and 607.12

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Solution

The fourth proportional to 612.88, 917.16 and 607.12 is: 908.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.88 : 917.16 = 607.12 : x
  2. Step 2: Convert to fraction form
    612.88/917.16 = 607.12/x
  3. Step 3: Cross multiply
    612.88x = 917.16 × 607.12
  4. Step 4: Simplify right side
    612.88x = 556,826.18
  5. Step 5: Solve for x
    x = 556,826.18/612.88
  6. Step 6: Final answer
    x = 908.54

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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.