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Finding the Fourth Proportional to 504.24, 695.70 and 307.55

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Solution

The fourth proportional to 504.24, 695.70 and 307.55 is: 424.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.24 : 695.70 = 307.55 : x
  2. Step 2: Convert to fraction form
    504.24/695.70 = 307.55/x
  3. Step 3: Cross multiply
    504.24x = 695.70 × 307.55
  4. Step 4: Simplify right side
    504.24x = 213,959.06
  5. Step 5: Solve for x
    x = 213,959.06/504.24
  6. Step 6: Final answer
    x = 424.32

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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.