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Finding the Fourth Proportional to 504.90, 695.88 and 411.45

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Solution

The fourth proportional to 504.90, 695.88 and 411.45 is: 567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.90 : 695.88 = 411.45 : x
  2. Step 2: Convert to fraction form
    504.90/695.88 = 411.45/x
  3. Step 3: Cross multiply
    504.90x = 695.88 × 411.45
  4. Step 4: Simplify right side
    504.90x = 286,319.83
  5. Step 5: Solve for x
    x = 286,319.83/504.90
  6. Step 6: Final answer
    x = 567.08

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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.