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Finding the Fourth Proportional to 612.15, 917.49 and 352.34

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Solution

The fourth proportional to 612.15, 917.49 and 352.34 is: 528.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.15 : 917.49 = 352.34 : x
  2. Step 2: Convert to fraction form
    612.15/917.49 = 352.34/x
  3. Step 3: Cross multiply
    612.15x = 917.49 × 352.34
  4. Step 4: Simplify right side
    612.15x = 323,263.84
  5. Step 5: Solve for x
    x = 323,263.84/612.15
  6. Step 6: Final answer
    x = 528.08

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1.5x scale

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.