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Finding the Fourth Proportional to 560.51, 840.77 and 317.03

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Solution

The fourth proportional to 560.51, 840.77 and 317.03 is: 475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.51 : 840.77 = 317.03 : x
  2. Step 2: Convert to fraction form
    560.51/840.77 = 317.03/x
  3. Step 3: Cross multiply
    560.51x = 840.77 × 317.03
  4. Step 4: Simplify right side
    560.51x = 266,549.31
  5. Step 5: Solve for x
    x = 266,549.31/560.51
  6. Step 6: Final answer
    x = 475.55

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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.