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Finding the Fourth Proportional to 606.60, 910.30 and 260.00

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Solution

The fourth proportional to 606.60, 910.30 and 260.00 is: 390.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.60 : 910.30 = 260.00 : x
  2. Step 2: Convert to fraction form
    606.60/910.30 = 260.00/x
  3. Step 3: Cross multiply
    606.60x = 910.30 × 260.00
  4. Step 4: Simplify right side
    606.60x = 236,678.53
  5. Step 5: Solve for x
    x = 236,678.53/606.60
  6. Step 6: Final answer
    x = 390.17

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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.