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Finding the Fourth Proportional to 560.83, 840.95 and 430.51

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Solution

The fourth proportional to 560.83, 840.95 and 430.51 is: 645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.83 : 840.95 = 430.51 : x
  2. Step 2: Convert to fraction form
    560.83/840.95 = 430.51/x
  3. Step 3: Cross multiply
    560.83x = 840.95 × 430.51
  4. Step 4: Simplify right side
    560.83x = 362,037.38
  5. Step 5: Solve for x
    x = 362,037.38/560.83
  6. Step 6: Final answer
    x = 645.54

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1.5x scale

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.