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Finding the Fourth Proportional to 504.29, 695.58 and 307.80

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Solution

The fourth proportional to 504.29, 695.58 and 307.80 is: 424.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.29 : 695.58 = 307.80 : x
  2. Step 2: Convert to fraction form
    504.29/695.58 = 307.80/x
  3. Step 3: Cross multiply
    504.29x = 695.58 × 307.80
  4. Step 4: Simplify right side
    504.29x = 214,099.52
  5. Step 5: Solve for x
    x = 214,099.52/504.29
  6. Step 6: Final answer
    x = 424.56

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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.