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Finding the Fourth Proportional to 504.22, 695.79 and 307.70

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Solution

The fourth proportional to 504.22, 695.79 and 307.70 is: 424.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.22 : 695.79 = 307.70 : x
  2. Step 2: Convert to fraction form
    504.22/695.79 = 307.70/x
  3. Step 3: Cross multiply
    504.22x = 695.79 × 307.70
  4. Step 4: Simplify right side
    504.22x = 214,094.58
  5. Step 5: Solve for x
    x = 214,094.58/504.22
  6. Step 6: Final answer
    x = 424.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.